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Asphalt modifier and preparation method thereof

An asphalt modifier, styrene technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of easy floating of rubber powder, rubber dust pollution, uneven mixing, etc., to increase anti-ultraviolet and anti-aging high performance, improved weather resistance and crack resistance, and low anti-aging properties

Inactive Publication Date: 2018-06-01
中昊黑元化工研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is easy to cause rubber dust pollution during the implementation process, and the rubber powder is easy to float, agglomerate, and mix unevenly.

Method used

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  • Asphalt modifier and preparation method thereof
  • Asphalt modifier and preparation method thereof

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preparation example Construction

[0021] A preparation method of asphalt modifier, comprising: (1) SBS, simethicone, carbon black and silicon dioxide are mixed and then stirred to prepare the mixture; in the present embodiment, further in order to make each component mix more Fully, preferably, the stirring time in step (1) is 5-30min.

[0022] (2) Extrude the mixture at 160-190° C. with a twin-screw extruder with a rotating speed of 20-120 r / min to obtain cylindrical strips, then cool them, and then cut them into pellets to obtain the asphalt modifier.

[0023] It should be noted that in this example, in the temperature range of 160-190 ° C, carbon black is more likely to melt with SBS, which is conducive to full mixing and uniformity. Too high a temperature will easily cause SBS to decompose, while too low a temperature will easily resulting in failure to reach the degree of melting.

[0024] In this embodiment, setting the rotational speed at 20-120 r / min is also conducive to the full mixing of carbon blac...

Embodiment 1

[0027] This embodiment provides an asphalt modification, the raw materials of which include, by weight, 90 parts of SBS, 8 parts of simethicone, 12 parts of carbon black and 2 parts of silicon dioxide. Among them, the viscosity value of simethicone oil is 100cps; the dibutyl phthalate absorption value of carbon black is 60cm 3 / 100g; the nitrogen adsorption specific surface area of ​​carbon black is 125m 2 / g; the tinting strength of carbon black is 105%.

[0028] The present embodiment also provides a kind of preparation method of asphalt modifier, comprising: (1) SBS, simethicone, carbon black and silicon dioxide are mixed and stirred for 5 minutes to prepare the mixture; (2) the mixture is heated at 160 ℃, rotating speed 20r / min to obtain cylindrical strips, then cooling, and then cutting into pellets to obtain asphalt modifier cylindrical pellets with a length of 1mm and a diameter of 1.8mm.

Embodiment 2

[0030] This embodiment provides a modified asphalt, the raw materials of which include, by weight, 110 parts of SBS, 15 parts of simethicone, 30 parts of carbon black and 8 parts of silicon dioxide. Among them, the viscosity value of simethicone oil is 1000cps; the dibutyl phthalate absorption value of carbon black is 76cm 3 / 100g; the nitrogen adsorption specific surface area of ​​carbon black is 145m 2 / g; the tinting strength of carbon black is 125%.

[0031] The present embodiment also provides a kind of preparation method of asphalt modifier, comprising: (1) SBS, simethicone, carbon black and silicon dioxide are mixed and stirred for 30min to prepare the mixture; (2) mixing the mixture at 190 ℃, rotating speed 120r / min, extruded to obtain cylindrical strips, cooled, and then cut into granules to obtain asphalt modifier cylindrical granules with a length of 3 mm and a diameter of 2.2 mm.

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Abstract

The invention belongs to the technical field of pavement composite materials, and provides an asphalt modifier and a preparation method thereof. The asphalt modifier comprises the following raw materials in parts by weight: 90-110 parts of a styrene-butadiene-styrene triblock copolymer (SBS), 8-15 parts of dimethicone, 12-30 parts of carbon black and 2-8 parts of silicon dioxide. The modifier cangreatly improve the weather resistance and the crack resistance of asphalt. The preparation method of the asphalt modifier comprises the following steps: (1), mixing the SBS, the dimethicone, the carbon black and the silicon dioxide, and then stirring to obtain a mixture; and (2), extruding the mixture at 160-190 DEG C according to a rotating speed of 20-120 r / min to obtain a cylindrical strip, then cooling, and then cutting into granules to obtain the asphalt modifier. The preparation method is simple, and can be widely applied to the field of asphalt roads, building waterproofing and the like.

Description

technical field [0001] The invention belongs to the technical field of pavement composite materials, and in particular relates to an asphalt modifier and a preparation method thereof. Background technique [0002] As a waterproof, moisture-proof and anti-corrosion organic gelling material, asphalt is widely used in road construction, building waterproofing and other fields. However, traditional asphalt pavement generally has the characteristics of poor weather resistance and road aging. The main reason is that traditional asphalt has poor high-temperature stability and low-temperature crack resistance, which easily leads to pavement damage. In order to improve the performance of asphalt pavement, at present, the method of directly adding rubber powder to asphalt is often used to make the asphalt have some properties of rubber, thereby improving the toughness of the asphalt pavement. But this method easily causes rubber dust pollution in the implementation process, and rubbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L83/04C08K3/04C08K3/36C08L95/00
Inventor 杨奎王定友范正平邓毅
Owner 中昊黑元化工研究设计院有限公司
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